Essex · England

Fire Rated Sealant in Witham

Our applicators work in Witham on intumescent and fire-rated sealant around gaps, frames and service penetrations. Old sealant removed completely, joints prepared properly and a 12-month guarantee.

  • Sealant items on a fire risk assessment action list
  • Unsealed gaps where pipes and cables go through a wall
  • Linear gaps at the head of walls

Book fire rated sealant in Witham

Landlords, agents and businesses in Witham

Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will quote.

If you manage several properties in or around Witham, several properties can go on one quote. Send us the addresses and the work at each, and pictures by email help.

Fire rated sealant in Witham

Door frame gaps, linear joints and holes around services all have their own details. Measuring the gap and checking what it’s made of comes first, then the sealant goes in to the depth the product’s details set. We work on door frames, linear gaps and plasterboard & masonry, and common reasons people get in touch are standard silicone or caulk in a fire-stopping gap and new service routes left unsealed after building work.

If you look after a school, care home, pub or office in Witham, washroom sealant, kitchen joints and fire-rated sealant around service openings all need upkeep. Work can be planned around opening hours where needed.

There’s a 12-month guarantee on every job, whatever its size.

The Mr Mastic team in navy uniforms in front of three Mr Mastic vans
Location
Witham (CM8)
Wider area
Essex
Guarantee
12 months on all our work
Price
A clear price before work begins
Phone
0345 464 0079
Last updated
26 October 2026

How it works

You do not need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the job takes anything from a few hours to several days, depending on how many gaps there are for a typical job. For a job in Witham, we need access to where the work is and somewhere nearby to park. For outside work, let us know about side access, gates and any upper-floor joints.

  1. First we work through your list or survey, measuring each gap and checking what it’s formed in.
  2. We remove any old or unsuitable filler and clean the gap.
  3. We put in whatever backing or fill the product detail specifies.
  4. We apply the fire-rated or intumescent sealant to the specified depth and tool it.
  5. Finally, we list where we worked and what we used, for your records.

Before we arrive

  • Tell us about any water getting in
  • Tell us if parking is tricky
  • Keep pets and children clear of the area while we work

Ask for a quote

We don’t publish a price list. Instead, we give you a clear quote for your job. To arrange one, call 0345 464 0079 or send us an email.

Get a quick quote

Read more

When something else is needed

It helps to know what we can’t do too:

  • Assessing a building’s fire safety
  • Sign-off of the building, which sits with building control or your assessor
  • Walls or floors that weren’t built to resist fire

Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly.

Joints and surfaces we work on

  • Flats & HMOs
  • Plasterboard & masonry
  • Linear gaps
  • Service penetrations
  • Door frames
  • Pipe & cable gaps

Signs you need fire rated sealant in Witham

Much fire stopping is hidden: above ceilings, inside risers and behind panels. Out of view, damage sits unnoticed until someone inspects.

The problems people generally mention when they call include:

  • Fire seals that have cracked with movement
  • Open holes round services passing through fire walls
  • Gaps left after a refit or conversion
  • Gaps flagged on a fire risk assessment

If you look after a church, hall or community building such as Witham United Reformed Church, older buildings that have had new heating or wiring often have service gaps worth checking.

Comparing quotes

  • Whether the sealant suits the joint
  • What happens if they find a problem under the old sealant
  • How the joint is cleaned and prepared
  • Which colour the sealant will be

10 questions to ask before you book

Fire rated sealant around Witham

In England, the Regulatory Reform (Fire Safety) Order 2005 requires a fire risk assessment for workplaces and for the common parts of blocks of flats, which is often where open fire-stopping gaps are first noticed. We work to the specification you’re given, installing the product to its tested details.

Managing a site like Maltings Academy? Then gaps opened by contractors for new cabling are a common finding in schools and offices. If you let a flat or house near Witham station, any gap left by new services in shared walls should be closed with a fire-rated product.

Witham is about 6 miles south-east of Braintree, in Essex. Wherever you are in the CM8 postcode area, we can carry out fire rated sealant at your property. 644 places in Essex are on our list. Our Chelmsford page covers work nearby.

Postcode districts we cover here for fire rated sealant: CM8. If you need fire rated sealant at a property on Station Road, Market Lane and Guithavon Rise or anywhere close by, our applicators can take on the job. Main roads around Witham include the B1018 and B1389, so getting to you is simple. If you are just outside Witham, we cover Little Braxted (1 mile east), Rivenhall End (2 miles north-east), Rivenhall (2 miles north), Faulkbourne (2 miles north-west) and Silver End (3 miles north). We also work in nearby towns such as Colchester (13 miles north-east), Chelmsford (8 miles south-west), Braintree (6 miles north-west), Maldon (5 miles south), Billericay (15 miles south-west) and Rayleigh (15 miles south).

Near you in Witham

In Witham, that means homes and buildings near Powers Hall Academy, The Crown Inn and Whet Mead, among other places. Witham has its own railway station: Witham station. A little further out are Cressing Temple (2.7 miles north-west). Green spaces nearby include Shut Heath Wood.

Map of Witham © OpenStreetMap contributors

Witham: your questions answered

What guarantee comes with fire rated sealant in Witham?

Every job comes with our one-year guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.

Can you do fire rated sealant in Witham?

Yes, Witham is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.

Can you fill the gap behind a fire door frame?

Yes. The joint between frame and wall is sealed with a fire-rated sealant following the tested details. The door, its seals and closer are for a door specialist.

Do you take out the old sealant first?

Yes. All of the old material is cut out and the joint cleaned.

Can I do it myself?

You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.

Can you do several jobs on one visit?

Yes, and it often makes sense. Doing several areas at once is normally more efficient.

Do the sealants smell?

There can be a smell while the sealant cures. Ventilation helps.

Will we have a record of what was sealed?

Yes. We record the locations we have sealed and the products used for your files.

Keeping the joints in good condition

Once the sealant has cured, a few habits help it last:

  • File the fire-stopping record where your assessor can find it
  • Include hidden areas like risers in routine checks
  • Get damaged fire seals looked at promptly
  • Plan fire stopping into any work that goes through walls or floors

Any fire seal that is cut or drilled needs resealing to its tested detail. If you need new services through a sealed wall, plan the fire stopping as part of the job.

When you plan work that goes through walls or ceilings, plan the fire stopping too. Catching it then saves a separate visit later.

DIY versus a professional finish

Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.

Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.

How the job changes by surface

Plasterboard walls

Plasterboard partitions are common in flats, offices and conversions. We use a product tested in that kind of wall.

Flats and HMOs

Converted houses often have gaps around old and new services. We seal the ones on your specification with a tested product and record where they are.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job